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Sometimes, when you work with a lot of data you can get the error:FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed – JavaScript heap out of memory . It happening because of default limit for heap in NodeJS (~ 1.5 GB).

Sometimes need to save docker image as a file, not only to docker registry. It’s a very good option when you don’t want share your image to dockerhub and don’t have own docker image registry. Continue reading